on u.s. 50 to south lake tahoe chain controls at twin bridges over echo summit. on interstate 80 they begin at kingvale. >> eastbound on. i 08 starting their weekend they didn't encounter a lot of snow until they got here with traffic to a halt. many drivers decided to chain up even before they were required to do so. >> this is my first time putting chains on. >> this is actually some of the faster traffic. as you can see it's not moving that fast. >> i don't have a four-wheel drive vehicle so i have to chain up. >> they may find the chaininging process fascinating. >> i'm tired of it. >> my wife is looking for a motel. >> they want to get the hard part out of way to clear the path for a fun weekend ahead. >> katie: the storm is still causing problems for travelers. yesterday at san francisco international airport, flights were cancelled and delayed leaving passengers quite frustrated. for up to the date information on flight cancellations and delays go to flight tracker on the front page of our website at abc7news.com. flight tracker is at its peak today, every